Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands |
Feb. 03, 2018 |
Jan. 28, 2017 |
|---|---|---|
| Deferred tax assets: | ||
| Federal and California research and other tax credits | $ 607,726 | $ 450,503 |
| Reserves and accruals | 16,951 | 35,887 |
| Share-based compensation | 2,493 | 3,733 |
| Net operating losses | 11,816 | 5,361 |
| Gross deferred tax assets | 638,986 | 495,484 |
| Valuation allowance | (618,353) | (456,541) |
| Total deferred tax assets | 20,633 | 38,943 |
| Total deferred tax liabilities | (52,204) | (51,112) |
| Net deferred tax assets (liabilities) | $ (31,571) | $ (12,169) |
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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